Changes
break in case more digits follow
<span style="{{{style|display:none}}}" class="sortkey">{{#ifeq:{{#expr:{{{1|0}}}}}|INF
|9000000000000000000
|{{#ifexpr:{{{1|0}}}=0
|5000000000000000000
|{{#expr:7000+{{{2|0}}}}}{{padleft:{{#iferror:{{#expr:{{#expr:floor({{{1|0}}}E(4-{{{2|0}}}))}}}}}}|5}}{{padleft:{{#expr:(floor({{{1|0}}}E(9-{{{2|0}}})))mod1E5}}|5}}{{padleft:{{#expr:(floor({{{1|0}}}E(14-{{{2|0}}})))mod1E5}}|5}}
}}
}}♠</span>{{{prefix|}}}{{formatnum:{{#if:{{#titleparts:{{{1|0}}}|1|2}}
|{{number table sorting/frac|{{{1|0}}}|{{#titleparts:{{{1|0}}}|1|1}}|{{#titleparts:{{{1|0}}}|1|2}}|pos}}
|{{#switch:{{#expr:{{{1|}}}400}}
|0|INF={{#iferror:{{#expr:1/{{#expr:{{{1|0}}}}}}}
|{{{1|0}}}
|{{#expr:{{{1}}}E-{{{2|0}}}}}<span style="margin-left:0.2em">×<span style="margin-left:0.1em">10</span></span><s style="display:none">^</s><sup>{{#ifexpr:{{{2|0}}}<0|−{{#expr:-{{{2|0}}}}}|{{{2|0}}}}}</sup>
}}
|{{{1|0}}}
}}
}}
}}
|9000000000000000000
|{{#ifexpr:{{{1|0}}}=0
|5000000000000000000
|{{#expr:7000+{{{2|0}}}}}{{padleft:{{#iferror:{{#expr:{{#expr:floor({{{1|0}}}E(4-{{{2|0}}}))}}}}}}|5}}{{padleft:{{#expr:(floor({{{1|0}}}E(9-{{{2|0}}})))mod1E5}}|5}}{{padleft:{{#expr:(floor({{{1|0}}}E(14-{{{2|0}}})))mod1E5}}|5}}
}}
}}♠</span>{{{prefix|}}}{{formatnum:{{#if:{{#titleparts:{{{1|0}}}|1|2}}
|{{number table sorting/frac|{{{1|0}}}|{{#titleparts:{{{1|0}}}|1|1}}|{{#titleparts:{{{1|0}}}|1|2}}|pos}}
|{{#switch:{{#expr:{{{1|}}}400}}
|0|INF={{#iferror:{{#expr:1/{{#expr:{{{1|0}}}}}}}
|{{{1|0}}}
|{{#expr:{{{1}}}E-{{{2|0}}}}}<span style="margin-left:0.2em">×<span style="margin-left:0.1em">10</span></span><s style="display:none">^</s><sup>{{#ifexpr:{{{2|0}}}<0|−{{#expr:-{{{2|0}}}}}|{{{2|0}}}}}</sup>
}}
|{{{1|0}}}
}}
}}
}}
